Borrowing it
Nothing to install: this file belongs to beel-collab/presets.dev. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/beel-collab/presets.dev/main/release/docker/native/copilot/.github/instructions/docker.instructions.mdgit clone --depth 1 https://github.com/beel-collab/presets.devWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/beel-collab/presets.dev/docker)<a href="https://agentmods.dev/instructions/beel-collab/presets.dev/docker"><img src="https://agentmods.dev/badge/instructions/beel-collab/presets.dev/docker/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/beel-collab/presets.dev/docker"><img src="https://agentmods.dev/badge/instructions/beel-collab/presets.dev/docker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00676 | $0.00676 |
| Opus 5.5 | $0.00270 | $0.00270 |
| Sonnet 5.5 | $0.00135 | $0.00135 |
| Haiku 4.5 | $0.00068 | $0.00068 |
Grade A, and why
presets.dev docker.instructions.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Docker Copilot Instructions: Images, Runtime Users and Build Secrets
Path-specific Copilot instructions for Docker. They apply through applyTo and leave .github/copilot-instructions.md in place.
Updated for Docker Engine 29, Nov 2026
Do not upgrade dependencies or the framework version unless the task asks.
Keep Engine, BuildKit, and Compose versions as the project already pins them. Engine 29 is the current major to write for when the host is already on it. Do not assume a Compose feature from a newer file works on an older plugin. Read the existing Dockerfile before you add a stage.
Image shape
A multi-stage build compiles in one stage and copies the artifact into a small runtime stage. The runtime stage does not include the compiler, the package manager cache, or the tests. Pin the base image by digest or by a version tag the project already updates on purpose. Do not use latest.
.dockerignore excludes .git, secrets, and local env files. A COPY . . of a context that contains .env bakes the secret into a layer.
Build secrets and runtime
A secret needed at build time uses a BuildKit secret mount. It does not use ARG or ENV for a token, because those stay in history. The final image does not contain the secret file.
The runtime process has a USER that is not root. Files it writes live in a directory that user owns. A healthcheck hits the app's ready endpoint. The process handles SIGTERM so a stop is not a kill ten seconds later.
Compose and privileges
Compose declares the same user, a read-only root filesystem when the app can live with it, and no extra capabilities. Do not mount /var/run/docker.sock into an application container. Do not set privileged: true to fix a permission error. Fix the user or the volume.
Ports bind to the interface the project intends. A database port is not published on the public interface for a local convenience that will be copied to production.
Checks
Build the image and scan the history for ENV secrets and a root user when the user asked you to build. docker history and a config linter are the evidence. Record the command. Do not push the image.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- today First seen · 62 lines · 676 tokens per session scan A 70317d2297f5
presets.dev docker.instructions.md is an instructions file published in the GitHub repository beel-collab/presets.dev (3 stars, last pushed yesterday), licensed MIT. It adds 676 tokens to every session, about $0.0027 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-13.
presets.dev docker.instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| presets.dev docker.instructions.mdbeel-collab/presets.dev | Instructions file | 3 | yesterday | MIT | A | 676 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,685 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,086 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 280k | 2d ago | MIT | A | 4,325 | Codex, OpenCode |